RLS Series

Compact Regenerative AC & DC Load, 6kVA to 1.296MVA

RLS Series

Compact Regenerative AC & DC Load, 6kVA to 1.296MVA

The Regenerative AC & DC Load Simulator – RLS Series is a programmable AC and DC electronic load designed for testing any AC and DC load application. Deliver 6–24kVA in 4U with scalability up to 1.296MVA+. The 4-quadrant load has several AC and DC emulation modes and flexible configurations of single, split and 3-phase operation, and steady-state or transient executions ideal for testing.

Power: Up to 756kVA+
Voltage: 30-350Vac L-N /0-606Vac L-L / 0 – ±475Vdc
Frequency: Up to 1,200Hz

Why Choose RLS Series

High Power Density

Compact 4U design with scalable power up to 1.296MVA+

Regenerative Power

Greater than > 90% energy efficiency saves energy and costs

Versatile Load Performance

Several Load Modes: Constant Current (CC), Constant Resistive (CR), Constant Power (CP)

Ultra Flexible Configuration

AC, DC input and 6-form configurations for multi-channel capability

Key Specifications

  • Single, Split, Three-Phase
  • Modular, scalable power 6kVA up to 24kVA in 4U
  • Up to 216kVA in a single 19″ cabinet
  • Parallel dual cabinets up to 432kVA
  • Three-Phase High Power Systems up to 1.296MVA+
  • Constant Power Voltage Range: 30-350Vac L-N /0-606Vac L-L / 0 – ±475Vdc
  • 15Hz-1200Hz
  • Full power available in AC and DC input capability; Flexible 6 Form Configuration
  • Full Galvanic Isolation protects users and units under test
  • 37% Extra current over competitor at lower voltage
  • Advanced waveform capture & scope function
  • Special inrush current application transient programming
  • AC Modes: Constant Current, Constant Power & Apparent Power, Constant Resistance, CC+CR, CC / CS Rectifier Mode 1ø & 3ø
  • DC Modes: Constant Current, Constant Power, Constant Resistance, CR+CC
  • Harmonics measurement for voltage and current on all phases
  • Sine, Square, Triangle, THD and Arbitrary waveforms
  • 3 Phase AC input with Active PFC
  • 200 programs for transient testing (List, Pulse, Step Modes)
  • 380V-480V 3 Phase AC input with Active PFC
  • Precision True-RMS metering of Volts, Amps, Power, VA, Power Factor and Crest Factor
  • Precision Voltage Programming – 0.02% with Continuous Self Calibration (CSC)
  • Safety Programmable Protection Limits for real power, apparent power, over voltage and over temperature
  • Extensive Analog and Digital I/O for system integration
  • RS-232, USB, Modbus, TCP, GPIB, SCPI compatibility; IVI Instrument Drivers
  • CE (EMC/Safety) Marked
  • Built-In SmartSource Suite Remote Control Platform

Powerful, Highly Efficient Load Simulation

AC / DC Load with Constant Power Voltage Range

Accurately simulate the power grid with seamless transition of voltage ranges. A single constant power voltage range for both higher current at lower voltage and higher voltages at lower currents eliminating the need to switch between voltage ranges. This prevents potential disruptions in output power.

  • Wide operating envelope
  • More current at lower voltage
  • Test broad range of power
  • Seamless transition of input power
Highest Current Availability for AC Load Simulation

The RLS Regenerative Load Simulator provides a broader range of current eliminating the risk of over or under sizing the power source. This reduces the need for additional capital investment. The diagram to the right illustrates the RLS’s capability to provide 37% more current at lower voltage when compared to a typical unit that maxes out at 35A/phase.

  • More current at lower voltage
  • No over or undersizing the load
  • Reduce the need for additional capital
Full 4 Quadrant Operation for Leading & Lagging Power Flows

Fully test AC & DC Power with Bidirectional, 4 quadrant operation. The programmable AC or DC electronic load has 4-Quadrant capability so both true and apparent power can be drawn with programmable control over power factor, current crest factor, current waveshape etc.

Several Regenerative AC & DC Load Emulation Modes

Regenerative AC & DC Electronic Load capability with both AC and DC operating modes pushes the boundaries of your test environment. Simulate linear and non-linear loads (including rectified), inductive and capacitive loads.

  • AC Modes: Constant Current, Constant Power & Apparent Power, Constant Resistance, CC+CR, CC / CS Rectifier Mode 1ø & 3ø
  • DC Modes: Constant Current, Constant Power, Constant Resistance, CR+CC
Most Flexible Input Configuration for AC/DC Load Simulation

Simultaneous AC and DC load operation of modes per phase(or channel), and the automatic switching of input modes provides test engineers with a unique capability and the highest degree of flexibility. AC, DC input configurations are available in single, split, three phase and multi-channels with optional isolated neutrals in AC and DC.

  • AC, DC configurations
  • Simultaneously test AC and DC,on separate phases
  • Full galvanic isolation from facility AC input to output and between output phases/channels also protects the user and the UUT.
Simplify Testing with Smart Control, Built-In

Get access to SmartSource Suite, our proprietary built-in platform that allows full remote control, development, and execution of test sequences in real-time. Intelligently monitor, control, and manage testing using the intuitive embedded web browser interface on any mobile device

  • Access on any web browser in real-time
  • Enhanced visualization and reporting tools
  • View and control on multiple windows
  • Save time and increase productivity
Featured Video

RLS Series Regenerative Load Product Intro Video

Bench or Rack Mount Models
ModelRated Power (VA)Output FormVoltage Ranges
(VAC/VDC1)
Current 2
(AAc/ADC2)
Rack Height
360RLS6kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
17.0 / 17.04U
390RLS9kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
25.0 / 21.04U
3120RLS12kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
34.0 / 21.04U
3150RLS15kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U
3180RLS18kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U
3210RLS21kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U
3241RLS24kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U

Notes:

  • *RMS current up to 48A per phase (45Hz to 200Hz);
  • Above 200Hz – up to 42.0 Arms / 21.0 Adc per phase in 3 & 2 Phase Mode, and 126 Arms / 63.0Adc in 1 Phase Mode..
Parallel Systems
ModelRated Power (VA)Output FormVoltage Ranges
(VAC/VDC1)
Current 2
(AAc/ADC2)
Rack Height
3300RLS-4UC30kVA/kW2,3 Ø30-350 (L-N)/
±0-475
84.0 / 42.08U
3360RLS-4UC36kVA/kW2,3 Ø30-350 (L-N)/
±0-475
84.0 / 42.018U
3481RLS-4UC48kVA/kW2,3 Ø30-350 (L-N)/
±0-475
96.0 / 42.018U
3630RLS-4UC63kVA/kW2,3 Ø30-350 (L-N)/
±0-475
126.0 / 63.018U
3721RLS-4UC72kVA/kW2,3 Ø30-350 (L-N)/
±0-475
144.0 / 63.018U
3961RLS-4UC96kVA/kW2,3 Ø30-350 (L-N)/
±0-475
192.0 / 84.032U
31050RLS-4UC105kVA/kW2,3 Ø30-350 (L-N)/
±0-475
210.0 / 105.032U
31201RLS-4UC120kVA/kW2,3 Ø30-350 (L-N)/
±0-475
240.0 / 105.032U
31441RLS-4UC144kVA/kW2,3 Ø30-350 (L-N)/
±0-475
288.0 / 126.032U
31681RLS-4UC168kVA/kW2,3 Ø30-350 (L-N)/
±0-475
336.0 / 147.042U
31921RLS-4UC192kVA/kW2,3 Ø30-350 (L-N)/
±0-475
384.0 / 168.042U
32161RLS-4UC216kVA/kW2,3 Ø30-350 (L-N)/
±0-475
432.0 / 189.042U

Notes:

  • Current values shown are per phase for 2 or 3 phase mode. In 1 phase, current would be times 3.
  • Note 1: Rated power shown is for Three Phase or Single Phase mode operation. For Split Phase mode, rated power is 2/3.
  • Note 2: For Voltages above 350Vac some frequency and Vthd restrictions apply.
  • Additional Information:
    • Paralled systems up to 432kVA/kW.
    • Three-Phase high power system configurations available up to 1.296 MVA/MW; Contact Factory for details.
    • Legacy model numbers are still available for ordering.
    • Contact factory for cabinet output wiring modifications to support single phase AC mode on cabinets above 84kVA

Why Choose RLS Series

High Power Density

Compact 4U design with scalable power up to 1.296MVA+

Regenerative Power

Greater than > 90% energy efficiency saves energy and costs

Versatile Load Performance

Several Load Modes: Constant Current (CC), Constant Resistive (CR), Constant Power (CP)

Ultra Flexible Configuration

AC, DC input and 6-form configurations for multi-channel capability

Key Specifications

  • Single, Split, Three-Phase
  • Modular, scalable power 6kVA up to 24kVA in 4U
  • Up to 216kVA in a single 19″ cabinet
  • Parallel dual cabinets up to 432kVA
  • Three-Phase High Power Systems up to 1.296MVA+
  • Constant Power Voltage Range: 30-350Vac L-N /0-606Vac L-L / 0 – ±475Vdc
  • 15Hz-1200Hz
  • Full power available in AC and DC input capability; Flexible 6 Form Configuration
  • Full Galvanic Isolation protects users and units under test
  • 37% Extra current over competitor at lower voltage
  • Advanced waveform capture & scope function
  • Special inrush current application transient programming
  • AC Modes: Constant Current, Constant Power & Apparent Power, Constant Resistance, CC+CR, CC / CS Rectifier Mode 1ø & 3ø
  • DC Modes: Constant Current, Constant Power, Constant Resistance, CR+CC
  • Harmonics measurement for voltage and current on all phases
  • Sine, Square, Triangle, THD and Arbitrary waveforms
  • 3 Phase AC input with Active PFC
  • 200 programs for transient testing (List, Pulse, Step Modes)
  • 380V-480V 3 Phase AC input with Active PFC
  • Precision True-RMS metering of Volts, Amps, Power, VA, Power Factor and Crest Factor
  • Precision Voltage Programming – 0.02% with Continuous Self Calibration (CSC)
  • Safety Programmable Protection Limits for real power, apparent power, over voltage and over temperature
  • Extensive Analog and Digital I/O for system integration
  • RS-232, USB, Modbus, TCP, GPIB, SCPI compatibility; IVI Instrument Drivers
  • CE (EMC/Safety) Marked
  • Built-In SmartSource Suite Remote Control Platform

Powerful, Highly Efficient Load Simulation

AC / DC Load with Constant Power Voltage Range

Accurately simulate the power grid with seamless transition of voltage ranges. A single constant power voltage range for both higher current at lower voltage and higher voltages at lower currents eliminating the need to switch between voltage ranges. This prevents potential disruptions in output power.

  • Wide operating envelope
  • More current at lower voltage
  • Test broad range of power
  • Seamless transition of input power
Highest Current Availability for AC Load Simulation

The RLS Regenerative Load Simulator provides a broader range of current eliminating the risk of over or under sizing the power source. This reduces the need for additional capital investment. The diagram to the right illustrates the RLS’s capability to provide 37% more current at lower voltage when compared to a typical unit that maxes out at 35A/phase.

  • More current at lower voltage
  • No over or undersizing the load
  • Reduce the need for additional capital
Full 4 Quadrant Operation for Leading & Lagging Power Flows

Fully test AC & DC Power with Bidirectional, 4 quadrant operation. The programmable AC or DC electronic load has 4-Quadrant capability so both true and apparent power can be drawn with programmable control over power factor, current crest factor, current waveshape etc.

Several Regenerative AC & DC Load Emulation Modes

Regenerative AC & DC Electronic Load capability with both AC and DC operating modes pushes the boundaries of your test environment. Simulate linear and non-linear loads (including rectified), inductive and capacitive loads.

  • AC Modes: Constant Current, Constant Power & Apparent Power, Constant Resistance, CC+CR, CC / CS Rectifier Mode 1ø & 3ø
  • DC Modes: Constant Current, Constant Power, Constant Resistance, CR+CC
Most Flexible Input Configuration for AC/DC Load Simulation

Simultaneous AC and DC load operation of modes per phase(or channel), and the automatic switching of input modes provides test engineers with a unique capability and the highest degree of flexibility. AC, DC input configurations are available in single, split, three phase and multi-channels with optional isolated neutrals in AC and DC.

  • AC, DC configurations
  • Simultaneously test AC and DC,on separate phases
  • Full galvanic isolation from facility AC input to output and between output phases/channels also protects the user and the UUT.
Simplify Testing with Smart Control, Built-In

Get access to SmartSource Suite, our proprietary built-in platform that allows full remote control, development, and execution of test sequences in real-time. Intelligently monitor, control, and manage testing using the intuitive embedded web browser interface on any mobile device

  • Access on any web browser in real-time
  • Enhanced visualization and reporting tools
  • View and control on multiple windows
  • Save time and increase productivity
Featured Video

RLS Series Regenerative Load Product Intro Video

Bench or Rack Mount Models
ModelRated Power (VA)Output FormVoltage Ranges
(VAC/VDC1)
Current 2
(AAc/ADC2)
Rack Height
360RLS6kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
17.0 / 17.04U
390RLS9kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
25.0 / 21.04U
3120RLS12kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
34.0 / 21.04U
3150RLS15kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U
3180RLS18kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U
3210RLS21kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U
3241RLS24kVA/kW1,2,3 Ø30-350 (L-N)/
±0-475
48.0 / 21.0 *4U

Notes:

  • *RMS current up to 48A per phase (45Hz to 200Hz);
  • Above 200Hz – up to 42.0 Arms / 21.0 Adc per phase in 3 & 2 Phase Mode, and 126 Arms / 63.0Adc in 1 Phase Mode..
Parallel Systems
ModelRated Power (VA)Output FormVoltage Ranges
(VAC/VDC1)
Current 2
(AAc/ADC2)
Rack Height
3300RLS-4UC30kVA/kW2,3 Ø30-350 (L-N)/
±0-475
84.0 / 42.08U
3360RLS-4UC36kVA/kW2,3 Ø30-350 (L-N)/
±0-475
84.0 / 42.018U
3481RLS-4UC48kVA/kW2,3 Ø30-350 (L-N)/
±0-475
96.0 / 42.018U
3630RLS-4UC63kVA/kW2,3 Ø30-350 (L-N)/
±0-475
126.0 / 63.018U
3721RLS-4UC72kVA/kW2,3 Ø30-350 (L-N)/
±0-475
144.0 / 63.018U
3961RLS-4UC96kVA/kW2,3 Ø30-350 (L-N)/
±0-475
192.0 / 84.032U
31050RLS-4UC105kVA/kW2,3 Ø30-350 (L-N)/
±0-475
210.0 / 105.032U
31201RLS-4UC120kVA/kW2,3 Ø30-350 (L-N)/
±0-475
240.0 / 105.032U
31441RLS-4UC144kVA/kW2,3 Ø30-350 (L-N)/
±0-475
288.0 / 126.032U
31681RLS-4UC168kVA/kW2,3 Ø30-350 (L-N)/
±0-475
336.0 / 147.042U
31921RLS-4UC192kVA/kW2,3 Ø30-350 (L-N)/
±0-475
384.0 / 168.042U
32161RLS-4UC216kVA/kW2,3 Ø30-350 (L-N)/
±0-475
432.0 / 189.042U

Notes:

  • Current values shown are per phase for 2 or 3 phase mode. In 1 phase, current would be times 3.
  • Note 1: Rated power shown is for Three Phase or Single Phase mode operation. For Split Phase mode, rated power is 2/3.
  • Note 2: For Voltages above 350Vac some frequency and Vthd restrictions apply.
  • Additional Information:
    • Paralled systems up to 432kVA/kW.
    • Three-Phase high power system configurations available up to 1.296 MVA/MW; Contact Factory for details.
    • Legacy model numbers are still available for ordering.
    • Contact factory for cabinet output wiring modifications to support single phase AC mode on cabinets above 84kVA